F40 in Mexico
The F40 rates good on 1 of 3 networks in Mexico (Altán). On Telcel it is not usable, missing B4. On AT&T it is limited, missing B2 B4.
Network by network
| Network | Verdict | Bands in use it supports | Core bands missing |
|---|---|---|---|
| Telcel | ✘ Not usable 0% | — | B4 |
| AT&T | ◐ Limited 0% | — | B2 B4 |
| Altán | ✔ Good 100% | B28 | — |
Better-rated models here
- Quectel RM520N-GL 5G Sub-6 · global · Quectel · 3/3 Good
- Quectel EG912U-GL Cat 1 bis · global · Quectel · 3/3 Good
- SIMCom SIM7600G-H Cat 4 · global · SIMCom · 3/3 Good
- MF833V LTE Cat 4 · Hyper Nexus dongle · 2/3 Good
About the F40
5G RedCap · Hyper Nexus dongle1
- 4G B1 B3 B5 B8 B28 B34 B38 B39 B40 B41
- 5G RedCap n1 n3 n5 n8 n28 n41 n78
Lightweight 5G RedCap dongle (needs 5G SA); 4G as emergency fallback.
Network access: long-term roaming
Many globally deployed IoT devices use multi-network roaming SIMs that can attach to several networks in a country, but some countries restrict long-term roaming by foreign SIMs. A local SIM roaming domestically is not affected.
◐ No legal ban; it depends on the operators: Permanent roaming is legally permissible (Cullen International: as in most of the Americas); whether it lasts depends on agreements between operators.2
All networks and bands in Mexico → · The F40 in 46 countries →
The F40 product page · Back to the home: ask, enter a model or bands, or compare models
Sources
- A Product specifications and certifications (manufacturer data) Hyper Nexus · 2026-09
- B IoT regulation in the Americas: permanent roaming legally permissible in most countries (Brazil bans it); no SIM registration in the US and Canada Cullen International · 2026-02
